8188945320 has 32 divisors (see below), whose sum is σ = 24566836320. Its totient is φ = 2183718720.

The previous prime is 8188945307. The next prime is 8188945361. The reversal of 8188945320 is 235498818.

It is a self number, because there is not a number n which added to its sum of digits gives 8188945320.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34120486 + ... + 34120725.

It is an arithmetic number, because the mean of its divisors is an integer number (767713635).

Almost surely, 2^8188945320 is an apocalyptic number.

It is an amenable number.

8188945320 is an abundant number, since it is smaller than the sum of its proper divisors (16377891000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8188945320 is a wasteful number, since it uses less digits than its factorization.

8188945320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68241225 (or 68241221 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 48.

The square root of 8188945320 is about 90492.7915361218. The cubic root of 8188945320 is about 2015.6230851637.

The spelling of 8188945320 in words is "eight billion, one hundred eighty-eight million, nine hundred forty-five thousand, three hundred twenty".